Don't be silly. Pointing out that lots of old cameras are durable isn't bashing Leica. There really is nothing special about the durability and longevity of Leicas, it's pretty normal. That's not bashing, that's just a simple truth.
"Post rangefinder" simply points out that as manufacturers switched to SLRs for their system cameras, the Leica basically became the unique excellent rangefinder system. There are however many great systems out there, Leica just happens to be a rangefinder system. That is all.